Raspberry Pi Touchscreen Driver Finally Being Mainlined With Linux 4.21 Kernel

Written by Michael Larabel in Raspberry Pi on 2 January 2019 at 09:38 PM EST. 8 Comments
Finally with the in-development Linux 4.21 kernel will be the input driver for supporting the Raspberry Pi 7-inch touchscreen.

Raspberry Pi has long offered an official 7-inch touchscreen monitor with 800x480 display that interfaces with the Raspberry Pi ARM SBCs via power from the GPIO and display via the DSI port. The touchscreen support 10-finger touch and other basic features but until now hasn't seen mainline kernel support.

With the input changes sent in today for the Linux 4.21 kernel, the raspberrypi-ts driver enables support for the touchscreen. This 200+ lines of code input driver acquires the information from a memory mapped area via the Raspberry Pi firmware.

The Raspberry Pi 7-inch touchscreen retails for about $60 USD and with the Linux 4.21 should be playing nicely with the mainline kernel.
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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via MichaelLarabel.com.

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